// Copyright 2017 The Go Authors. All rights reserved. // Use of this source code is governed by a BSD-style // license that can be found in the LICENSE file. package cpu_test import ( . "internal/cpu" "internal/godebug" "internal/testenv" "os" "os/exec" "testing" ) func MustHaveDebugOptionsSupport(t *testing.T) { if !DebugOptions { t.Skipf("skipping test: cpu feature options not supported by OS") } } func MustSupportFeatureDetection(t *testing.T) { // TODO: add platforms that do not have CPU feature detection support. } func runDebugOptionsTest(t *testing.T, test string, options string) { MustHaveDebugOptionsSupport(t) testenv.MustHaveExec(t) env := "GODEBUG=" + options cmd := exec.Command(os.Args[0], "-test.run=^"+test+"$") cmd.Env = append(cmd.Env, env) output, err := cmd.CombinedOutput() if err != nil { t.Fatalf("%s with %s: run failed: %v output:\n%s\n", test, env, err, string(output)) } } func TestDisableAllCapabilities(t *testing.T) { MustSupportFeatureDetection(t) runDebugOptionsTest(t, "TestAllCapabilitiesDisabled", "cpu.all=off") } func TestAllCapabilitiesDisabled(t *testing.T) { MustHaveDebugOptionsSupport(t) if godebug.New("#cpu.all").Value() != "off" { t.Skipf("skipping test: GODEBUG=cpu.all=off not set") } for _, o := range Options { want := false if got := *o.Feature; got != want { t.Errorf("%v: expected %v, got %v", o.Name, want, got) } } }